Walk-small vibrating mechanical hydraulic single drum compactor single drum compactor DL550 single drum compactor Walk-small single drum roller DL550 single drum roller hydraulic system energy and the environment are closely related, single drum roller energy production and consumption directly affect environmental protection and management. China's energy consumption structure how? What is the relationship between coal consumption and air pollution? Hydraulic system Single drum compactor what China needs a low-carbon green energy development? National Development and Reform Commission, Energy Research Institute, China Energy Research Society at the seminar on the above issues were discussed for the delegates. First, the structural characteristics: When the device is in a state of vibration, the engine speed is constant; hydraulic system uses variable displacement pump and fixed motor integrated structure, composed of a closed-loop, high volumetric efficiency; the rotation direction of the motor by two-way variable pump control, output by changing the speed of the pump displacement is achieved; the volume of the system pump and motor is small, the whole structure is arranged more mobility; with a water spray system, easy to operate valves, pipes can be easily removed for cleaning and replacement ; joystick can be adjusted according to the different needs of different angles; aircraft are small, simple, easy to transport Second, the technical parameters: Rated power (kW) 3.3 work quality (kg) 560 Working speed (km / h) 0- 3.6 Theoretical gradeability, vibration on / off (%) 30/35 frequency (Hz) 55 Exciting force (kN) 15 Nominal amplitude (mm) 0.35 vibration wheel width (mm) 550